Invention Application
- Patent Title: ROTATING ELECTRICAL MACHINE AND DRIVE DEVICE
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Application No.: US17969689Application Date: 2022-10-20
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Publication No.: US20230132520A1Publication Date: 2023-05-04
- Inventor: Keisuke NAKATA , Yuki ISHIKAWA , Sota DOI , Kouhei OBA
- Applicant: NIDEC CORPORATION
- Applicant Address: JP Kyoto
- Assignee: NIDEC CORPORATION
- Current Assignee: NIDEC CORPORATION
- Current Assignee Address: JP Kyoto
- Priority: JP2021-177844 20211029
- Main IPC: H02K5/173
- IPC: H02K5/173 ; H02K5/20

Abstract:
A rotating electrical machine includes an electricity removal device in electrical contact with a shaft and a housing, a channel, a nozzle having a through hole communicating with an inside of the shaft, and a seal radially between the shaft and the housing. The shaft includes a hollow first portion and a second portion having a lid on a first side of the first portion and an extension extending from the lid to the first side. The extension axially passes through the through hole. The device is in contact with the extension on the first side relative to the through hole. The seal is on the first side relative to the nozzle and on the second side relative to the device. The shaft includes a channel communicating the first portion and the through hole. The channel opens toward an axial gap between the nozzle and the seal of the housing.
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